How to Open and Read .eml Email Files

Many email programs and services allow downloading and/or saving email messages in a format called “.eml”. This format is very simple and very standard. These are plain text files that hold one email message per file and which contain the full message headers and full MIME-encoded message content.

LuxSci allows saving email messages from WebMail and from the SecureLine Escrow portal as eml files for offline usage, and the importing of eml files directly into your email folders.

While .eml is a widely used standard, old versions of Microsoft Outlook (before v2010) do not support it and that leaves many people wondering what to do with these files.

Here we explain how to open and view .eml-encoded message files on your computer.

Open with an Email Program

Many popular email programs support opening and viewing messages in .eml files. There are certainly many different ways to open .eml files in each email program. In the following list, we provide one or several example methods you can use to access them.

Set the “Finder” to use “Entourage” as the default application to open .eml files — be sure you click on Change All / (Apply to All) in the finder window to make the change take effect

Then, when you double click on .eml files in the future, they will open in Entourage.

Eudora 7 (Windows)

Drag the .eml file into Eudora and it will display it for you.

IncrediMail 2.5

Right click on the email message

Choose “Open With…”

Select the “IncrediMail Application”

(If you don’t see “Incredimail Application” in the list, you may need to “Browse” for it … assuming you have it installed. I tis likely under “C:\Program Files\IncrediMail\Bin\IncMail.exe” [though it may be under “Program Files (x86)” instead of just “Program Files”]. Once you have used it the first time in this manual way, Windows should remember the choice for you so you can just select it quickly in the future.)

Internet Explorer

Good News! .eml-ecoded email files can be viewed in Internet Explorer since they are formatted the same as .mht files. Changing the file extension from “.eml” to “.mht” should cause the file to open directly in Internet Explorer. .eml files may also be opened within Internet Explorer using the Microsoft Exchange Server Outlook WebAccess client.

Mac Mail

You cannot open “.eml” files directly from Mac Mail; however, if you “double click” on the “.eml” file, it should open in Mac Mail automatically so that you can view the message.

This works as long as Mac Mail is the default program for opening .eml files, which it will be unless you change it.

Outlook Express

Double click on the .eml file and it will open in Outlook Express (if that is still the default program for .eml files on your computer).

Otherwise, right click on the .eml file and choose “Open With”. Then choose “Outlook Express”. You can then also set Outlook Express to be the default application for .eml files so that in the future all you have to do is double click on them to open them in Outlook.

PS – Outlook Express is really old and insecure and unsupported and should not be used! Use something else, like Thunderbird.

Outlook v2010+ (Windows)

Right click on the .eml file and choose “Open With”. Then choose “Microsoft Outlook”.

You can then also set Outlook to be the default application for .eml files so that in the future all you have to do is double click on them to open them in Outlook.

Outlook v2011+ (Mac)

You can’t open the .eml directly from Outlook; however:

Use the “Finder” “Open With” to open the file in Outlook

Set the “Finder” to use “Outlook” as the default application to open .eml files — be sure you click on Change All / (Apply to All) in the finder window to make the change take effect

Then, when you double click on .eml files in the future, they will open in Outlook.